.page-news {
  --page-news-bg: #F5F5F5;
  --page-news-card-bg: #FFFFFF;
  --page-news-accent: #00BFA5;
  --page-news-accent-soft: rgba(0, 191, 165, 0.08);
  --page-news-accent-strong: #FF6D00;
  --page-news-dark: #1A237E;
  --page-news-text: #212121;
  --page-news-text-light: #616161;
  --page-news-border: #B2DFDB;
  --page-news-data: #00E5FF;
  --page-news-radius: 12px;
  --page-news-radius-sm: 6px;
  --page-news-shadow: 0 2px 12px rgba(0, 0, 0, 0.06);
  --page-news-shadow-hover: 0 6px 24px rgba(0, 0, 0, 0.10);
  --page-news-font-heading: 'Inter', 'Noto Sans SC', sans-serif;
  --page-news-font-body: 'Inter', 'Noto Sans SC', sans-serif;
  --page-news-font-data: monospace;

  display: block;
  width: 100%;
  background-color: var(--page-news-bg);
  font-family: var(--page-news-font-body);
  color: var(--page-news-text);
  line-height: 1.6;
}

.page-news__inner {
  max-width: 1280px;
  margin: 0 auto;
  padding: 1.5rem 1rem 3rem;
}

/* 面包屑 */
.page-news__breadcrumb {
  display: flex;
  align-items: center;
  gap: 0.4rem;
  font-size: 0.8rem;
  color: var(--page-news-text-light);
  margin-bottom: 1.5rem;
  letter-spacing: 0.02em;
}

.page-news__breadcrumb a {
  color: var(--page-news-accent);
  text-decoration: none;
  transition: color 0.2s ease;
}

.page-news__breadcrumb a:hover {
  color: var(--page-news-accent-strong);
}

.page-news__breadcrumb-sep {
  color: var(--page-news-border);
  font-weight: 300;
}

/* 页眉区 */
.page-news__masthead {
  position: relative;
  border-radius: var(--page-news-radius);
  overflow: hidden;
  margin-bottom: 2rem;
  min-height: 280px;
  display: flex;
  align-items: center;
  background-color: var(--page-news-dark);
}

.page-news__masthead-bg {
  position: absolute;
  inset: 0;
  z-index: 0;
}

.page-news__masthead-img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  opacity: 0.25;
  display: block;
}

.page-news__masthead-content {
  position: relative;
  z-index: 1;
  padding: 2.5rem 2rem;
  width: 100%;
}

.page-news__masthead-title {
  font-family: var(--page-news-font-heading);
  font-size: clamp(2rem, 5vw, 3.2rem);
  font-weight: 700;
  letter-spacing: 0.05em;
  color: #FFFFFF;
  margin: 0 0 0.5rem;
  text-shadow: 0 2px 12px rgba(0, 0, 0, 0.3);
}

.page-news__masthead-desc {
  font-size: clamp(0.9rem, 1.6vw, 1.1rem);
  color: rgba(255, 255, 255, 0.85);
  max-width: 640px;
  margin: 0;
  line-height: 1.5;
}

/* 筛选栏 */
.page-news__filter-bar {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin-bottom: 2rem;
  padding-bottom: 1rem;
  border-bottom: 1px solid var(--page-news-border);
}

.page-news__filter-btn {
  font-family: var(--page-news-font-body);
  font-size: 0.85rem;
  font-weight: 500;
  padding: 0.45rem 1.1rem;
  border-radius: 999px;
  border: 1px solid var(--page-news-border);
  background-color: transparent;
  color: var(--page-news-text-light);
  cursor: default;
  transition: background-color 0.2s ease, color 0.2s ease, border-color 0.2s ease;
  letter-spacing: 0.03em;
}

.page-news__filter-btn:hover {
  background-color: var(--page-news-accent-soft);
  border-color: var(--page-news-accent);
  color: var(--page-news-accent);
}

.page-news__filter-btn.is-active {
  background-color: var(--page-news-accent);
  border-color: var(--page-news-accent);
  color: #FFFFFF;
  font-weight: 600;
}

/* 布局 */
.page-news__layout {
  display: grid;
  grid-template-columns: 1fr;
  gap: 2rem;
  margin-bottom: 2.5rem;
}

@media (min-width: 900px) {
  .page-news__layout {
    grid-template-columns: 1fr 320px;
  }
}

/* 主要区域 */
.page-news__primary {
  display: flex;
  flex-direction: column;
  gap: 2.5rem;
}

/* 板块标题 */
.page-news__section-heading {
  display: flex;
  align-items: center;
  gap: 1rem;
  margin: 0 0 1.25rem;
  font-family: var(--page-news-font-heading);
  font-size: 1.3rem;
  font-weight: 700;
  letter-spacing: 0.04em;
  color: var(--page-news-dark);
}

.page-news__section-heading-text {
  white-space: nowrap;
  flex-shrink: 0;
}

.page-news__section-heading-line {
  flex: 1;
  height: 1px;
  background: linear-gradient(90deg, var(--page-news-border), transparent);
}

.page-news__section--full {
  margin-top: 0.5rem;
  margin-bottom: 2.5rem;
}

/* 文章卡片 */
.page-news__card {
  background-color: var(--page-news-card-bg);
  border-radius: var(--page-news-radius);
  padding: 1.25rem 1.5rem;
  border: 1px solid var(--page-news-border);
  box-shadow: var(--page-news-shadow);
  transition: box-shadow 0.3s ease, transform 0.3s ease;
  margin-bottom: 1rem;
}

.page-news__card:hover {
  box-shadow: var(--page-news-shadow-hover);
  transform: translateY(-2px);
}

.page-news__card--with-img {
  padding: 0;
  overflow: hidden;
  display: flex;
  flex-direction: column;
}

@media (min-width: 600px) {
  .page-news__card--with-img {
    flex-direction: row;
  }
}

.page-news__card-img-wrap {
  flex-shrink: 0;
  overflow: hidden;
  background-color: var(--page-news-dark);
}

@media (min-width: 600px) {
  .page-news__card-img-wrap {
    width: 200px;
    min-height: 100%;
  }
}

.page-news__card-img-wrap img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
  transition: transform 0.4s ease;
}

.page-news__card:hover .page-news__card-img-wrap img {
  transform: scale(1.03);
}

.page-news__card-body {
  padding: 1.25rem 1.5rem;
  flex: 1;
}

.page-news__card-label {
  margin-bottom: 0.4rem;
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.page-news__card-tag {
  display: inline-block;
  font-size: 0.7rem;
  font-weight: 600;
  letter-spacing: 0.04em;
  padding: 0.15rem 0.7rem;
  border-radius: 999px;
  background-color: var(--page-news-accent-soft);
  color: var(--page-news-accent);
  text-transform: uppercase;
}

.tag-update {
  background-color: rgba(0, 191, 165, 0.10);
  color: #00897B;
}

.tag-tip {
  background-color: rgba(255, 109, 0, 0.10);
  color: #E65100;
}

.tag-insight {
  background-color: rgba(26, 35, 126, 0.08);
  color: #1A237E;
}

.page-news__card-title {
  font-family: var(--page-news-font-heading);
  font-size: 1.05rem;
  font-weight: 700;
  letter-spacing: 0.03em;
  color: var(--page-news-dark);
  margin: 0 0 0.3rem;
}

.page-news__card-summary {
  font-size: 0.9rem;
  color: var(--page-news-text-light);
  margin: 0 0 0.6rem;
  line-height: 1.55;
}

.page-news__card-meta {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  flex-wrap: wrap;
}

.page-news__card-link {
  font-size: 0.82rem;
  font-weight: 600;
  color: var(--page-news-accent);
  text-decoration: none;
  transition: color 0.2s ease;
  letter-spacing: 0.02em;
}

.page-news__card-link:hover {
  color: var(--page-news-accent-strong);
}

/* 侧栏 */
.page-news__secondary {
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
}

.page-news__spotlight {
  background-color: var(--page-news-card-bg);
  border-radius: var(--page-news-radius);
  padding: 1.5rem;
  border: 1px solid var(--page-news-border);
  box-shadow: var(--page-news-shadow);
}

.page-news__spotlight-header {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  margin-bottom: 1rem;
  padding-bottom: 0.75rem;
  border-bottom: 1px solid var(--page-news-border);
}

.page-news__spotlight-icon {
  font-size: 1.1rem;
  color: var(--page-news-accent-strong);
}

.page-news__spotlight-title {
  font-family: var(--page-news-font-heading);
  font-size: 0.95rem;
  font-weight: 700;
  letter-spacing: 0.04em;
  color: var(--page-news-dark);
  margin: 0;
}

.page-news__spotlight-item {
  padding: 0.6rem 0;
  border-bottom: 1px solid rgba(178, 223, 219, 0.4);
}

.page-news__spotlight-item:last-child {
  border-bottom: none;
}

.page-news__spotlight-text {
  font-size: 0.85rem;
  color: var(--page-news-text-light);
  margin: 0 0 0.25rem;
  line-height: 1.5;
}

.page-news__spotlight-link {
  font-size: 0.78rem;
  font-weight: 600;
  color: var(--page-news-accent);
  text-decoration: none;
  transition: color 0.2s ease;
}

.page-news__spotlight-link:hover {
  color: var(--page-news-accent-strong);
}

.page-news__tag-cloud {
  background-color: var(--page-news-card-bg);
  border-radius: var(--page-news-radius);
  padding: 1.25rem 1.5rem;
  border: 1px solid var(--page-news-border);
  box-shadow: var(--page-news-shadow);
}

.page-news__tag-cloud-title {
  font-family: var(--page-news-font-heading);
  font-size: 0.9rem;
  font-weight: 700;
  letter-spacing: 0.04em;
  color: var(--page-news-dark);
  margin: 0 0 0.75rem;
}

.page-news__tag-cloud-list {
  display: flex;
  flex-wrap: wrap;
  gap: 0.4rem;
}

.page-news__tag-cloud-item {
  display: inline-block;
  font-size: 0.75rem;
  font-weight: 500;
  padding: 0.25rem 0.8rem;
  border-radius: 999px;
  background-color: var(--page-news-accent-soft);
  color: var(--page-news-accent);
  letter-spacing: 0.02em;
  border: 1px solid transparent;
  transition: background-color 0.2s ease, border-color 0.2s ease;
}

.page-news__tag-cloud-item:hover {
  background-color: transparent;
  border-color: var(--page-news-accent);
}

/* 行业观察网格 */
.page-news__insight-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1.5rem;
}

@media (min-width: 800px) {
  .page-news__insight-grid {
    grid-template-columns: 1fr 1fr;
  }
}

.page-news__insight-card {
  background-color: var(--page-news-card-bg);
  border-radius: var(--page-news-radius);
  overflow: hidden;
  border: 1px solid var(--page-news-border);
  box-shadow: var(--page-news-shadow);
  display: flex;
  flex-direction: column;
  transition: box-shadow 0.3s ease, transform 0.3s ease;
}

.page-news__insight-card:hover {
  box-shadow: var(--page-news-shadow-hover);
  transform: translateY(-3px);
}

.page-news__insight-visual {
  width: 100%;
  height: 200px;
  overflow: hidden;
  background-color: var(--page-news-dark);
}

@media (min-width: 600px) {
  .page-news__insight-visual {
    height: 240px;
  }
}

.page-news__insight-visual img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
  transition: transform 0.5s ease;
}

.page-news__insight-card:hover .page-news__insight-visual img {
  transform: scale(1.04);
}

.page-news__insight-content {
  padding: 1.25rem 1.5rem 1.5rem;
  flex: 1;
  display: flex;
  flex-direction: column;
}

.page-news__insight-title {
  font-family: var(--page-news-font-heading);
  font-size: 1.05rem;
  font-weight: 700;
  letter-spacing: 0.04em;
  color: var(--page-news-dark);
  margin: 0.4rem 0 0.4rem;
}

.page-news__insight-summary {
  font-size: 0.88rem;
  color: var(--page-news-text-light);
  line-height: 1.6;
  margin: 0 0 0.75rem;
  flex: 1;
}

.page-news__insight-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem 1.5rem;
  padding-top: 0.6rem;
  border-top: 1px solid rgba(178, 223, 219, 0.4);
}

.page-news__insight-stat {
  font-size: 0.78rem;
  color: var(--page-news-text-light);
  letter-spacing: 0.02em;
  display: flex;
  align-items: center;
  gap: 0.3rem;
}

.page-news__insight-stat .data-number {
  font-family: var(--page-news-font-data);
  font-weight: 700;
  font-size: 1em;
  color: var(--page-news-data);
  background: rgba(0, 229, 255, 0.10);
  padding: 0.1rem 0.4rem;
  border-radius: 4px;
}

@media (min-width: 800px) {
  .page-news__insight-card--reverse .page-news__insight-visual {
    order: 1;
  }
  .page-news__insight-card--reverse .page-news__insight-content {
    order: 0;
  }
}

/* 结尾区域 */
.page-news__outro {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1.5rem;
  background-color: var(--page-news-dark);
  border-radius: var(--page-news-radius);
  overflow: hidden;
  margin-top: 1.5rem;
}

@media (min-width: 700px) {
  .page-news__outro {
    grid-template-columns: 1fr 1fr;
  }
}

.page-news__outro-img {
  height: 240px;
  overflow: hidden;
}

@media (min-width: 700px) {
  .page-news__outro-img {
    height: 100%;
    min-height: 280px;
  }
}

.page-news__outro-img img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
}

.page-news__outro-content {
  padding: 1.5rem 1.5rem 2rem;
  display: flex;
  flex-direction: column;
  justify-content: center;
}

.page-news__outro-text {
  font-size: 0.95rem;
  color: rgba(255, 255, 255, 0.9);
  line-height: 1.6;
  margin: 0 0 0.75rem;
  max-width: 480px;
}

.page-news__outro-contact {
  font-size: 0.82rem;
  color: rgba(255, 255, 255, 0.7);
  margin: 0;
  letter-spacing: 0.02em;
}

.page-news__outro-contact a {
  color: var(--page-news-accent);
  text-decoration: none;
}

.page-news__outro-contact a:hover {
  color: var(--page-news-accent-strong);
}

/* 滚动显现 */
.page-news [data-scroll] {
  opacity: 0;
  transform: translateY(20px);
  transition: opacity 0.6s cubic-bezier(0.23, 1, 0.32, 1), transform 0.6s cubic-bezier(0.23, 1, 0.32, 1);
}

.page-news [data-scroll].revealed {
  opacity: 1;
  transform: translateY(0);
}

@media (prefers-reduced-motion: reduce) {
  .page-news [data-scroll] {
    opacity: 1;
    transform: none;
    transition: none;
  }
  .page-news__card:hover,
  .page-news__insight-card:hover,
  .page-news__card-img-wrap img,
  .page-news__insight-visual img {
    transform: none !important;
  }
}

/* 数据数字动画 */
.page-news .data-number {
  display: inline-block;
  animation: pageNewsPulse 2s ease-in-out infinite;
}

@keyframes pageNewsPulse {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.7; }
}

@media (prefers-reduced-motion: reduce) {
  .page-news .data-number {
    animation: none;
  }
}

/* 移动端适配 */
@media (max-width: 599px) {
  .page-news__inner {
    padding: 1rem 0.75rem 2rem;
  }

  .page-news__masthead-content {
    padding: 1.5rem 1.25rem;
  }

  .page-news__masthead {
    min-height: 200px;
  }

  .page-news__card {
    padding: 1rem 1.15rem;
  }

  .page-news__card--with-img {
    padding: 0;
  }

  .page-news__card-body {
    padding: 1rem 1.15rem;
  }

  .page-news__filter-bar {
    gap: 0.35rem;
  }

  .page-news__filter-btn {
    font-size: 0.78rem;
    padding: 0.35rem 0.85rem;
  }

  .page-news__insight-visual {
    height: 160px;
  }

  .page-news__outro-img {
    height: 180px;
  }

  .page-news__outro-content {
    padding: 1.25rem 1.15rem 1.5rem;
  }

  .page-news__section-heading {
    font-size: 1.1rem;
  }

  .page-news__spotlight {
    padding: 1.15rem;
  }

  .page-news__tag-cloud {
    padding: 1rem 1.15rem;
  }
}

@media (max-width: 399px) {
  .page-news__masthead-title {
    font-size: 1.6rem;
  }

  .page-news__masthead-desc {
    font-size: 0.82rem;
  }

  .page-news__insight-grid {
    gap: 1rem;
  }

  .page-news__card-title {
    font-size: 0.95rem;
  }
}